Microsoft's announced that Windows 11 will release on October 5, 2021. Detailed within a new blog post, this new operating system will be available as a free upgrade for eligible Windows 10 PCs, alongside new PCs being pre-installed with it.
However, that upgrade won't be immediately available for all users. Microsoft's announced they'll be rolling out this upgrade gradually until mid-2022, confirming when you receive the upgrade prompt is based upon "hardware eligibility, reliability metrices, age of device and other factors."
Windows 11 Launches On October 5
Specifically, Microsoft informed us:
We expect all eligible devices to be offered the free upgrade to Windows 11 by mid-2022. If you have a Windows 10 PC that’s eligible for the upgrade, Windows Update will let you know when it’s available. You can also check to see if Windows 11 is ready for your device by going to Settings > Windows Update and select Check for updates.
As such, even if you aren't prompted, you may still be able to upgrade sooner. If you're not ready to upgrade yet, then fear not. Windows 10 still has a long life ahead of it and previously, Microsoft confirmed they'll be closing down support on October 14th, 2025.
Source: Tom's Hardware